A static mixer for plastic extruders that is easy to clean

Abstract

The utility model discloses an easy-to-clean static mixer for plastic extruder belongs to the plastic processing technical field. This kind of easy-to-clean static mixer for plastic extruder, including first pipeline, second pipeline and third pipeline, the both ends of first pipeline are equipped with docking assembly respectively, first pipeline is linked with the one end of second pipeline and third pipeline respectively through docking assembly, the one end of second pipeline is connected with the assembly sleeve, the inside welding of assembly sleeve one side has mixed inner core, one end of mixed inner core extends to the inside of second pipeline, first pipeline and third pipeline in proper order, the utility model discloses through the cooperation of docking assembly, assembly sleeve and mixed inner core, makes this static mixer constitute separate structure to facilitate dismounting to satisfy the efficient cleaning operation like this.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing technology, specifically to an easy-to-clean static mixer for a plastic extruder. Background Technology

[0002] Mixing technology is frequently used in plastic manufacturing, and static mixers are the most commonly used mixing unit in the mixing process. Static mixers are common mixing units in plastic extrusion molding, which can enhance mixing, eliminate color streaks and color differences in extruded products, and improve product performance. However, the cleaning effect of existing static mixers is not ideal. A search revealed a Chinese patent with authorization announcement number CN221968897U that discloses an easy-to-clean static mixer for plastic extruders, including a cylinder, fastening bolts, and two transition parts. A heating coil is installed on the outer circumference of the cylinder, and the interior of the cylinder is fixedly connected by screws. The device has a positioning ring, and two symmetrically arranged mounting blocks are fixedly fitted on the outer circumference of the cylinder. Two symmetrically arranged insert blocks are fixedly connected to one side of each mounting block. A spindle is fixedly connected inside the cylinder. With the setting of structures such as a pull button and a pull rod, when the equipment needs to be cleaned, simply pull the pull button to make the pull rod slide, which in turn makes the connecting block slide, which in turn makes the two active locking blocks slide, which in turn makes the two rotating shafts rotate and makes the two driven locking blocks slide, thereby separating the transition piece from the mounting block, making the equipment cleaning more convenient. The above technical solution solves the problems of cumbersome cleaning and inconvenient handling in the prior art.

[0003] Currently, the pipe structure in existing static mixers is mostly a one-piece structure. The long length makes it inconvenient to clean the inside, requiring the use of long rods for cleaning. Due to the inconvenience of operation, it is easy to cause damage to the inside. Utility Model Content

[0004] To address the problem of existing static mixers being difficult to clean, this invention provides an easy-to-clean static mixer for plastic extruders.

[0005] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0006] A static mixer for an easy-to-clean plastic extruder includes a first pipe, a second pipe, and a third pipe. The first pipe has docking components at both ends, and the first pipe is connected to one end of the second pipe and one end of the third pipe through the docking components. One end of the second pipe is threadedly connected to a fitting, and a mixing core is welded inside one side of the fitting. One end of the mixing core extends sequentially into the interior of the second pipe, the first pipe, and the third pipe.

[0007] Furthermore, the docking assembly includes a first collar and a second collar, with the two first collars respectively fitted onto one end of the second pipe and the third pipe, and the two second collars respectively fitted onto both ends of the first pipe.

[0008] The beneficial effect of adopting the above-mentioned further solution is that the first and second rings of the docking components are respectively fitted onto the corresponding pipe ends to form a precise docking structure, avoiding misalignment during pipe connection that could lead to raw material leakage.

[0009] Furthermore, a movable seat is installed at one end of the second collar, and a lever is hinged to the second collar through the movable seat. A locking knob is inserted through one end of the lever, and one end of the locking knob passes through the lever and is threadedly connected to one side of the first collar.

[0010] The advantages of adopting the above-mentioned further solution are that the second ring, via a hinged lever connected to a movable seat, can quickly lock the first and second rings together with a locking knob, shortening the disassembly time during cleaning or maintenance. The threaded locking knob allows for flexible adjustment of the locking force to adapt to sealing requirements under different working conditions, while also facilitating quick pipe disassembly after loosening, improving operational convenience.

[0011] Furthermore, the movable seats are arranged in a cross shape on the outer wall of the second ring.

[0012] The beneficial effect of adopting the above-mentioned further solution is that it enables the lever to lock the pipe evenly from four directions, ensuring that the pipe is connected under balanced force and avoiding excessive local force that could lead to pipe deformation or poor sealing.

[0013] Furthermore, the assembly includes a sleeve, the inner wall of which is provided with welding plates.

[0014] The beneficial effect of adopting the above-mentioned further solution is that the sleeve is fixed to the mixed inner core by welding the inner wall welding piece. The welding piece increases the welding contact area, improves the connection strength between the mixed inner core and the assembly, and prevents the mixed inner core from shifting under the impact of raw materials.

[0015] Furthermore, the hybrid inner core includes a shaft, one end of which is fitted with a bracket, and one end of the bracket is welded to one side of the welding piece.

[0016] The advantage of adopting the above-mentioned further solution is that the shaft is welded to the welding plate through the bracket, which ensures that the shaft is kept in the center position in the pipeline and avoids damage to the mixing blades due to friction with the inner wall of the pipeline caused by misalignment.

[0017] Furthermore, a mixing blade is installed on the outer wall of the shaft, and the outer wall of the mixing blade is in contact with the inner wall of the first pipe, the second pipe and the third pipe.

[0018] The beneficial effect of adopting the above-mentioned further solution is that the mixing blades are in close contact with the inner wall of the pipe, which can fully divide and stir the flowing plastic raw materials, improve the mixing uniformity, and meet the requirements of raw material mixing precision during plastic extrusion.

[0019] Furthermore, a fixing sleeve is threaded to one end of the third pipe. The fixing sleeve includes a sleeve body, and a fixing plate is installed inside the sleeve body. A pressure block is connected to one side of the fixing plate, and one side of the pressure block is in contact with one end of the shaft.

[0020] The beneficial effect of adopting the above-mentioned further solution is that the pressure block connected by the fixing plate presses against the end of the shaft, which plays an axial limiting role on the mixing core, preventing the mixing core from shifting axially under the impact of raw material flow, and ensuring that the mixing blade is always in the optimal mixing position.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This easy-to-clean static mixer for plastic extruders features a modular structure formed by the interlocking components, fittings, and mixing core. This facilitates disassembly and assembly, enabling efficient cleaning. The first, second, and third pipes constitute the main mixing channel, with the interlocking components allowing for quick connection and separation of the three pipes for easy disassembly and cleaning. The fitting at one end of the second pipe secures the mixing core, ensuring it penetrates the entire three pipes and is fully mixed during flow. The threaded fitting allows for quick disassembly, enabling the mixing core to be removed from the pipes, preventing residual material from adhering to the pipe walls and significantly improving cleaning convenience. Attached Figure Description

[0023] Figure 1 An assembly perspective view of an easy-to-clean static mixer for a plastic extruder provided by this utility model;

[0024] Figure 2 An enlarged schematic diagram of the docking assembly of an easy-to-clean static mixer for a plastic extruder provided by this utility model;

[0025] Figure 3 A schematic diagram of the assembly structure of an easy-to-clean static mixer for a plastic extruder provided by this utility model;

[0026] Figure 4 A schematic diagram of the mixing core structure of an easy-to-clean static mixer for a plastic extruder provided by this utility model;

[0027] Figure 5 This utility model provides a schematic diagram of the fixing sleeve structure of an easy-to-clean static mixer for a plastic extruder.

[0028] In the diagram: 1. First pipe; 2. Second pipe; 3. Third pipe; 4. Connecting assembly; 401. First collar; 402. Second collar; 403. Movable seat; 404. Dial plate; 405. Locking knob; 5. Assembly kit; 501. Sleeve; 502. Welding piece; 6. Mixing core; 601. Shaft; 602. Bracket; 603. Mixing blade; 7. Fixed sleeve; 701. Sleeve body; 702. Fixed plate; 703. Pressure block. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-5 This utility model provides a technical solution: an easy-to-clean static mixer for a plastic extruder, comprising a first pipe 1, a second pipe 2, and a third pipe 3. The first pipe 1 has connecting components 4 at both ends, and the first pipe 1 is connected to one end of the second pipe 2 and the third pipe 3 respectively via the connecting components 4. The first pipe 1, second pipe 2, and third pipe 3 constitute the main channel of the mixer. The connecting components 4 enable quick connection and disconnection of the three pipes, facilitating subsequent disassembly and cleaning. One end of the second pipe 2 is threadedly connected to a fitting 5, and a mixing core 6 is welded inside one side of the fitting 5. One end of the mixing core 6 extends sequentially into the interior of the second pipe 2, the first pipe 1, and the third pipe 3. The fitting 5 at one end of the second pipe 2 fixes the mixing core 6, allowing the mixing core to penetrate the interior of the three pipes, ensuring thorough mixing of the plastic raw materials during flow. The threaded fitting can be quickly disassembled, allowing the mixing core to be removed from the pipe, avoiding the difficulty in cleaning residual material adhering to the pipe wall and significantly improving cleaning convenience.

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] As an embodiment of this utility model, the docking component 4 further includes a first ring 401 and a second ring 402. The two first rings 401 are respectively fitted onto one end of the second pipe 2 and the third pipe 3, and the two second rings 402 are respectively fitted onto both ends of the first pipe 1. The first rings 401 and the second rings 402 of the docking component 4 are respectively fitted onto the corresponding pipe ends to form a precise docking structure, thereby avoiding misalignment during pipe connection that could lead to raw material leakage.

[0033] In one embodiment of this utility model, a movable seat 403 is installed at one end of the second collar 402. A lever 404 is hinged to the second collar 402 via the movable seat 403. A locking knob 405 is inserted through one end of the lever 404, and one end of the locking knob 405 passes through the lever 404 and is threadedly connected to one side of the first collar 401. The lever 404 hinged to the second collar 402 via the movable seat 403, in conjunction with the locking knob 405, can quickly lock the first collar 401 and the second collar 402, shortening the disassembly time during cleaning or maintenance. The threaded locking knob can flexibly adjust the locking force to adapt to the sealing requirements under different working conditions, and at the same time facilitates quick disassembly of the pipe after loosening, improving operational convenience.

[0034] As an embodiment of this utility model, the movable seat 403 is distributed in a cross shape on the outer wall of the second ring 402, so that the lever 404 locks the pipe evenly from four directions, ensuring that the pipe is connected under balanced force and avoiding excessive local force that could cause pipe deformation or poor sealing.

[0035] As an embodiment of this utility model, the assembly 5 further includes a sleeve 501, and the inner wall of the sleeve 501 is provided with a welding piece 502. The sleeve 501 is welded and fixed to the mixing core 6 by the welding piece 502 on the inner wall. The welding piece increases the welding contact area, improves the connection strength between the mixing core and the assembly, and prevents the mixing core from shifting under the impact of raw materials.

[0036] As an embodiment of this utility model, the mixing core 6 further includes a shaft 601, and a bracket 602 is installed on the outer wall of one end of the shaft 601. One end of the bracket 602 is welded to one side of the welding piece 502. The shaft 601 is welded to the welding piece 502 through the bracket 602 to ensure that the shaft is kept in the center position in the pipe and to avoid damage to the mixing blades due to friction with the inner wall of the pipe caused by displacement.

[0037] As an embodiment of this utility model, the outer wall of the shaft 601 is further provided with a mixing blade 603. The outer wall of the mixing blade 603 is in contact with the inner wall of the first pipe 1, the second pipe 2 and the third pipe 3. The mixing blade 603 is in contact with the inner wall of the pipe, which can fully divide and stir the flowing plastic raw material, improve the mixing uniformity, and meet the requirements of raw material mixing precision during plastic extrusion.

[0038] As an embodiment of this utility model, further, one end of the third pipe 3 is threadedly connected to a fixing sleeve 7. The fixing sleeve 7 includes a sleeve body 701. A fixing plate 702 is installed inside the sleeve body 701. A pressure block 703 is connected to one side of the fixing plate 702. One side of the pressure block 703 is in contact with one end of the shaft 601. The pressure block 703 connected to the fixing plate 702 presses against the end of the shaft 601, which plays an axial limiting role on the mixing core 6, preventing the mixing core from shifting axially under the impact of raw material flow, and ensuring that the mixing blade is always in the optimal mixing position.

[0039] Specifically, the working principle of this easy-to-clean static mixer for plastic extruders is as follows: First, assemble the pipes using the docking assembly 4: Place the first ring 401 onto the ends of the second pipe 2 and the third pipe 3 respectively, and place the second ring 402 onto both ends of the first pipe 1. Rotate the lever 404 hinged to the cross-shaped movable seat 403 on the second ring 402, causing the lever to engage with the first ring 401. Tighten the locking knob 405 to achieve precise connection and sealing of the three pipes. Next, the assembly 5 (the bracket 602 of the mixing core 6 welded to the inner wall of the sleeve 501) is threaded onto one end of the second pipe 2. The shaft 601 of the mixing core and the outer wall mixing blades 603 (fitting against the inner wall of the pipe) are then inserted into the third pipe 3. Finally, through the fixed sleeve 7 threaded onto one end of the third pipe 1, the pressure block 703 on the fixed plate 702 presses against the end of the shaft for limiting its position. When plastic raw materials flow through the pipe, the mixing blades divide and stir the raw materials to achieve thorough mixing; when cleaning is required, loosen the locking knob to disassemble the pipe, remove the fittings and fixing sleeve, and the mixing core can be taken out for easy cleaning of residual raw materials on the inner wall of the pipe and the mixing core.

Claims

1. A static mixer for an easy-to-clean plastic extruder, characterized in that, It includes a first pipe (1), a second pipe (2) and a third pipe (3). The two ends of the first pipe (1) are respectively provided with docking components (4). The first pipe (1) is connected to one end of the second pipe (2) and the third pipe (3) through the docking components (4). One end of the second pipe (2) is threadedly connected with a fitting (5). A hybrid inner core (6) is welded inside one side of the fitting (5). One end of the hybrid inner core (6) extends sequentially into the interior of the second pipe (2), the first pipe (1) and the third pipe (3).

2. The easy-to-clean static mixer for a plastic extruder according to claim 1, characterized in that, The docking assembly (4) includes a first collar (401) and a second collar (402). The two first collars (401) are respectively fitted onto one end of the second pipe (2) and the third pipe (3), and the two second collars (402) are respectively fitted onto both ends of the first pipe (1).

3. The easy-to-clean static mixer for a plastic extruder according to claim 2, characterized in that, A movable seat (403) is installed at one end of the second collar (402). A lever (404) is hinged to the second collar (402) through the movable seat (403). A locking knob (405) is inserted through one end of the lever (404). One end of the locking knob (405) passes through the lever (404) and is threaded to one side of the first collar (401).

4. The easy-to-clean static mixer for a plastic extruder according to claim 3, characterized in that, The movable seat (403) is distributed in a cross shape on the outer wall of the second ring (402).

5. The easy-to-clean static mixer for a plastic extruder according to claim 1, characterized in that, The assembly (5) includes a sleeve (501), and the inner wall of the sleeve (501) is provided with welding plates (502).

6. The easy-to-clean static mixer for a plastic extruder according to claim 5, characterized in that, The hybrid inner core (6) includes a shaft (601), and a bracket (602) is installed on the outer wall of one end of the shaft (601). One end of the bracket (602) is welded to one side of the welding piece (502).

7. The easy-to-clean static mixer for a plastic extruder according to claim 6, characterized in that, The outer wall of the shaft (601) is fitted with a mixing blade (603), and the outer wall of the mixing blade (603) is in contact with the inner wall of the first pipe (1), the second pipe (2) and the third pipe (3).

8. The easy-to-clean static mixer for a plastic extruder according to claim 7, characterized in that, One end of the third pipe (3) is threadedly connected to a fixing sleeve (7). The fixing sleeve (7) includes a sleeve body (701). A fixing plate (702) is installed inside the sleeve body (701). A pressure block (703) is connected to one side of the fixing plate (702). One side of the pressure block (703) is in contact with one end of the shaft (601).

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